161219029 has 8 divisors (see below), whose sum is σ = 168419520. Its totient is φ = 154034496.

The previous prime is 161219017. The next prime is 161219059. The reversal of 161219029 is 920912161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161219029 - 2¹³ = 161210837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161219059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19734 + ... + 26680.

It is an arithmetic number, because the mean of its divisors is an integer number (21052440).

Almost surely, 2^161219029 is an apocalyptic number.

It is an amenable number.

161219029 is a deficient number, since it is larger than the sum of its proper divisors (7200491).

161219029 is a wasteful number, since it uses less digits than its factorization.

161219029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 161219029 is about 12697.2055587046. The cubic root of 161219029 is about 544.2587673270.

The spelling of 161219029 in words is "one hundred sixty-one million, two hundred nineteen thousand, twenty-nine".